Reenforced door for railway cars of the dumping type



' APPLICATION FILED APR- 7, 192:.

Patented Nov. 21

Patented Nov. 21, 1922.

it i r r.

PATIENT GARTH G. GILPIN, OFItIVEBSIDE, ILLINOIS, ASSIGNOR TO WALTER P. MURPHY, OF

CHICAGO,

ILLINOIS.

REENFORCEID DOOR FOR RAILWAY CARS THE DUI/[PING TYPE.

Original application filed August 30,1919, Serial No. 320,792.

Divided and this application filed To all whom it may concern:

Be it known that I, GARTH G. GILPIN, a

citizen of the United States, residing at Riverside, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Reenforced Doors for Railway Cars of the Dumping Type, of which the following is a specification.

My invention relates to railway cars of the drop-bottom or dumping type, and has for its object to provide an improved sheet metal door having reinforcements which give the door maximum strength and rigidity for minimum weights of metal, and which, furthermore, do not hinder the free discharge of the cargo when the door is so arranged on the ear that the load passes over it in discharging. The doors of cars of the dumping type are subjected to severe shocks and pressures, due to the impact of the cargo in loading and the weight of material on the door, and other causes, and these shocks and pressures tend to deflect and warp the doors so that in time they are likely not to properly close. Any considerable warping may also interfere with the movements of the door.

The invention consists of the new and improved constructions, arrangements and devices, to be hereinafter more specifically described and claimed, for carrying out the above stated objects and such other incidental objects as will appear from the following description.

The invention is illustrated in a preferred embodiment in the accompanying drawing, wherein- Fig. 1 is a fragmentary plan view .of a railway car of the general service type, provided with a drop-bottom panel or door made in accordance with my invention;

Fig. 2 is a vertical section taken on line 2-2 of Fig. 1, showing the door in its open position.

Like characters of reference designate like parts in the fi ures of the drawing.

In the drawing have shown a door panel constructed in accordance with my invention applied to a car of the general service type. It will be obvious, however, that this door structure is not limited in its use to cars of this particular type. 10 designates one of the side walls of a car, 11, the

Patent No. 1,380,055, dated May 31, 1921. April 7', 1921. Serial N0. 459,305.

center sill structure, and 12, 12 the cross members of the underframe.

The door consists of a sheet metal panel 13 provided with downwardly projecting flanges 14. These flanges are preferably formed integral with the body of the sheet by pressing the margins of the sheet outwardly from the body portion so as to form a continuous rigidifying rib around the margins of the sheet. The door may be hinged to the body of the car in any suitable manner. In the drawing I have shown it hinged to the center sill structure 1]. by a pair of hinges 15, 15, the strap portions 16, 16 of which extend substantially across the door panel. The hinge straps may be secured to the door in any suitable manner, for example, by rivets 17 In order to provide the marginal portions of the door, outside the hinges, with the necessary rigidity to resist the tendency which they have to sag under the pressure of the cargo, or to be distorted by the various other stresses to which they ,are subjected, and to also reinforce and rigidify the door throughout, the door panel is formed with a plurality of corrugations 18 which cross the hinge straps 16, 16. The corrugations 18 are pressed preferably so as to project above the plane of the sheet and radiate from the hinged edge of the door. The inner ends 18 of certain of the corrugations stop short of the ends of the adjacent corrugations, as shown in Fig. 1. By forming the door panel with the radially extending corrugations, very considerable strength and rigidity is added to the door withoutmaterially interfering with the discharge of bulk material such as sand, gravel, coal, or the like, when the doors are lowered to their discharging position.

This application is a division of In copending application Serial No. 320,792, filed August 30, 1919 (patented as No. 1,380,055, May 31, 1921).

I claim:

1. A sheet metal door for a railway car of the dumping type provided with hinges having hinge members extending across the under side of the door, so as to strengthen the same, and formed with a plurality of corrugations which radiate from the hinged edge of the door.

2. A sheet metal door for a railway car of the dumping type provided with a plurality 'of corrugations Whioh radiate from one edge of the door and extend su'bstan tially across the door.

3. A sheet metal door for a railvvay 'car of the dumping type formed with a plurality of out-pressed corrugations which radiate from one edgeof the door and ex tend'aeross the dooriin the general jdiretion of movement of the load "when discharging.

4. A sheet metal door for a railwayear of the dumping type formed with a 111 rality of corrugations which radiate from one edge of thedoor and corrugations between said first mentioned corrugations which terminate short of the ends of; said first mentioned corrugations adjacent the edge from which said first mentioned corrug-ations radiate.

' A sheet man (1061* for a ma ear of the dumping type having hinges for hingi'ngjt to' the ear and formed With a plurality of radially disposed corrugations whi hrexts iirqmtlze hiase lw of h door toward the lateral aridopposite edges ofthe door.

'6 sheet k166i for a railway car or the a type "having hinges for hinging it to the ear, and formed with a and opposite edges thereof.

GARTH G. GILPIN. 

